My second floor is wood built with insulation inside and shera outside, now im try find best solution on material selection. plasterboard or particleboard was first alternatives i thinked of, but i guess particleboard is of the list. This room are air-conditioned bedrooms so i need material who keep the rooms cold. I have seen Global have some grey plates, could it be a mix of cement and plaster? they cost more than plasterboard and heavier, any know thie plates? or any other advices?
roofing is steel constructed, with Bluescoope metal roofing( with foam inside) Im thinking of using plasterboard in ceiling, but then i have see some light ceiling board/tiles ( i think 60x60) are they good? Btter than plasreboead?I will isolate in top of ceiling. My buiding tread (My Isaan House Building Tread)